A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a collapsible loess area building foundation reinforcing pile. The collapsible loess area building foundation reinforcing pile comprises an upper pile foundation, a lower pile foundation, an underpinning steel pipe and an operating pit. The lower end of the upper pile foundation is connected with the upper end of the lower pile foundation. The upper end of the upper pile foundation sequentially penetrates a self-weight collapsible loess layer and a lower backfill soil layer and stretches into a concrete bearing platform. The lower end of the underpinning steel pipe is connected with the upper pile foundation, the upper end of the underpinning steel pipe is connected with a building foundation, a pile foundation channel is formed in the self-weight collapsible loess layer, and a gap is formed between the upper pile foundation and the side wall of the pile foundation channel. According to the reinforcing pile, the influences of negative friction of the self-weight collapsible loess layer on the upper pile foundation can be effectively eliminated, and it is guaranteed that loads transmitted by the reinforcing pile are borne by friction between the lower pile foundation and a non-collapsible loess layer. The invention further discloses a pile pressing construction method. The method includes the steps of excavation of the operating pit; construction of the lower pile foundation; construction of the upper pile foundation; connection of the upper pile foundation and the building foundation; and construction of the concrete bearing platform. The pile pressing construction efficiency is improved through the pile pressing construction method.
The invention discloses a collapsible loess area building foundation reinforcing pile. The collapsible loess area building foundation reinforcing pile comprises an upper pile foundation, a lower pile foundation, an underpinning steel pipe and an operating pit. The lower end of the upper pile foundation is connected with the upper end of the lower pile foundation. The upper end of the upper pile foundation sequentially penetrates a self-weight collapsible loess layer and a lower backfill soil layer and stretches into a concrete bearing platform. The lower end of the underpinning steel pipe is connected with the upper pile foundation, the upper end of the underpinning steel pipe is connected with a building foundation, a pile foundation channel is formed in the self-weight collapsible loess layer, and a gap is formed between the upper pile foundation and the side wall of the pile foundation channel. According to the reinforcing pile, the influences of negative friction of the self-weight collapsible loess layer on the upper pile foundation can be effectively eliminated, and it is guaranteed that loads transmitted by the reinforcing pile are borne by friction between the lower pile foundation and a non-collapsible loess layer. The invention further discloses a pile pressing construction method. The method includes the steps of excavation of the operating pit; construction of the lower pile foundation; construction of the upper pile foundation; connection of the upper pile foundation and the building foundation; and construction of the concrete bearing platform. The pile pressing construction efficiency is improved through the pile pressing construction method.
Collapsible loess area building foundation reinforcing pile and pile pressing construction method thereof
2016-01-06
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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